Collaborative filtering: Difference between revisions

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→‎Overview: Very close to WP:NOTESSAY -- needs sourcing to support the various, potentially spurious, assumptions
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m Dating maintenance tags: {{Whom?}} {{Citation needed}}
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==Overview==
The [[internet growth|growth]] of the [[Internet]] has made it much more difficult to effectively [[information extraction|extract useful information]] from all the available [[online information]].{{whom?|date=March 2021}} The overwhelming amount of data necessitates mechanisms for efficient [[information filtering]].{{whom?|date=March 2021}} Collaborative filtering is one of the techniques used for dealing with this problem.
 
The motivation for collaborative filtering comes from the idea that people often get the best recommendations from someone with tastes similar to themselves.{{citation needed|date=March 2021}} Collaborative filtering encompasses techniques for matching people with similar interests and making [[recommender system|recommendations]] on this basis.
 
Collaborative filtering algorithms often require (1) users' active participation, (2) an easy way to represent users' interests, and (3) algorithms that are able to match people with similar interests.